Python Sympy Permutation.rank_nonlex()用法及代碼示例

Permutation.rank_nonlex()：rank_nonlex()是一個sympy Python庫函數，它返回非詞典排列的等級。

用法： sympy.combinatorics.permutations.Permutation.rank_nonlex()

返回：非詞典排列的等級。

代碼1：rank_nonlex()示例

# Python code explaining 
# SymPy.Permutation.rank_nonlex() 
  
# importing SymPy libraries 
from sympy.combinatorics.partitions import Partition 
from sympy.combinatorics.permutations import Permutation 
  
# Using from  
# sympy.combinatorics.permutations.Permutation.rank_nonlex() method  
  
# creating Permutation 
a = Permutation([[2, 0], [3, 1]]) 
  
b = Permutation([1, 3, 5, 4, 2, 0]) 
  
  
print ("Permutation a - rank_nonlex form : ", a.rank_nonlex()) 
print ("Permutation b - rank_nonlex form : ", b.rank_nonlex())

輸出：

Permutation a – rank_nonlex form : 13
Permutation b – rank_nonlex form : 72

代碼2：rank_nonlex()示例– 2D排列

# Python code explaining 
# SymPy.Permutation.rank_nonlex() 
  
# importing SymPy libraries 
from sympy.combinatorics.partitions import Partition 
from sympy.combinatorics.permutations import Permutation 
  
# Using from sympy.combinatorics.permutations.Permutation.rank_nonlex() method  
  
# creating Permutation 
a = Permutation([[2, 4, 0],  
                 [3, 1, 2], 
                 [1, 5, 6]]) 
  
  
print ("Permutation a - rank_nonlex form : ", a.rank_nonlex())

輸出：

Permutation a – rank_nonlex form : 218

相關用法

注：本文由純淨天空篩選整理自noobestars101大神的英文原創作品 SymPy | Permutation.rank_nonlex() in Python。非經特殊聲明，原始代碼版權歸原作者所有，本譯文未經允許或授權，請勿轉載或複製。